2000 Johnson/Evinrude SS 2 thru 8 outboards Service Manual, Page 147Get this manual
Engine Temperature CheckAll Models The Markal Thermomelt Stik is heat-sensitive marker that melts on contact with surface of specific temperatureOne source for Thermomelt Stiks is Stevens Instrument CompanyThe Thermomelt Stik mark will appear dull and chalky when the surface marked is below the Stik's rated temperatureWhen the surface exceeds the Stik's rated temperature, the mark will appear liquid and glossy
To achieve accurate and consistent readings, engine temperature must be checked on the lower starboard cylinder head screw for 2, 2.3, 3.3, 5, and on the cylinder water jacket for 4,6,8
INote For the following engine operating temperatures and RPM
figures to be correct, the inlet water temperature must be 70 100 (21 30 C)
Thermomelt Stik Procedure
Twist and remove spark plug leads before changing propellers to avoid accidental starting of engine1Install correct test propeller and place engine in test tank